# 1-Butanethiol; see Butyl mercaptan — US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side

For 1-Butanethiol; see Butyl mercaptan, substance is 1-Butanethiol; see Butyl mercaptan, verified against its source on 2026-08-05.

- **Substance:** 1-Butanethiol; see Butyl mercaptan

## What the source says

> 109795 | | 1-Butanethiol; see Butyl mercaptan

## Source

- https://www.dir.ca.gov/title8/5155.html

Last verified: 2026-08-05. Review by: 2027-08-05.
Part of [US workplace chemical exposure limits: federal OSHA vs Cal/OSHA, side by side](https://referencesource.org/workplace-exposure-limits/).